The subtle variations in how cars and other machines have been constructed such as thread types, pitch, and wrench sizes has fascinated a lot of my car collector friends for years. What about that thing they called British Whitworth Standard. And then there companies like Caterpillar with their own tooling too. It could drive a man Nuts. Or at least to Nut brown ale.
Dave

The subtle variations in how cars and other machines have been constructed such as thread types, pitch, and wrench sizes has fascinated a lot of my car collector friends for years. What about that thing they called British Whitworth Standard. And then there companies like Caterpillar with their own tooling too. It could drive a man Nuts. Or at least to Nut brown ale.
Dave

Wheel nut is as Brian thought, 1/2" -20 Thread per Inch. Quite standard for trailer axles. Thx everyone for your thoughts and have a Merry Xmas!

Yes - other than the 5.0TA, Escape uses the Torflex #10, which includes the 3500 pound capacity (per pair) hub group, with 5 on 4.50 bolt pattern and electric brakes.

The Cerka diagram looks like some version of the one from the application catalog from Dexter Axle, with their version of the parts list with Cerka part numbers. (If looking for parts from other suppliers, use the Dexter part numbers.) Dexter offers some variations, so not all of them are the common configuration (thus the several bolt patterns), but in this case it looks like there's only one stud choice, so that's clear now. Other Dexter hubs have at least a choice of studs versus threaded for bolts, but we know Escape doesn't use those.